220331142 has 24 divisors (see below), whose sum is σ = 477753744. Its totient is φ = 73386864.

The previous prime is 220331141. The next prime is 220331149. The reversal of 220331142 is 241133022.

220331142 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220331141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23808 + ... + 31740.

It is an arithmetic number, because the mean of its divisors is an integer number (19906406).

Almost surely, 2^220331142 is an apocalyptic number.

220331142 is an abundant number, since it is smaller than the sum of its proper divisors (257422602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220331142 is a wasteful number, since it uses less digits than its factorization.

220331142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9484 (or 9481 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 220331142 is about 14843.5555713582. Note that the first 4 decimals coincide. The cubic root of 220331142 is about 603.9838069281.

Adding to 220331142 its reverse (241133022), we get a palindrome (461464164).

The spelling of 220331142 in words is "two hundred twenty million, three hundred thirty-one thousand, one hundred forty-two".